Finding the Fourth Proportional to 143,564,690.67, 198,118,265.36 and 78,374,594.67
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Solution
The fourth proportional to 143,564,690.67, 198,118,265.36 and 78,374,594.67 is: 108,156,390.48
Step by Step Solution
- Step 1: Write the proportion equation
143,564,690.67 : 198,118,265.36 = 78,374,594.67 : x - Step 2: Convert to fraction form
143,564,690.67/198,118,265.36 = 78,374,594.67/x - Step 3: Cross multiply
143,564,690.67x = 198,118,265.36 × 78,374,594.67 - Step 4: Simplify right side
143,564,690.67x = 15,527,438,743,921,628 - Step 5: Solve for x
x = 15,527,438,743,921,628/143,564,690.67 - Step 6: Final answer
x = 108,156,390.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.